Leather-graining machine.



NB. 761,233. PATENTED MAY 31, 1904.

c. H. KEEFE. LEATHER GRAINING MACHINE.

APPLIUATION FILED 001212, 1908.

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No. 761,233. PATENTED MAY '31, 1904.

0. H. KEEPE. I

LEATHER GRAINING MACHINE. 1 APPLIOATION FILED OUT. 12, 1903.

NO MODEL. 2 SHEETS-SHEET 2- I'fq e '5 E 5. Ma i;

MWH. 4 M 4 Patented May 31, 1904.

PATENT OFFICE.

CHARLES H. KEEFE,.OF SALEM, MASSACHUSETTS.

LEATHER-GRAINING MACHINE.

SPECIFICATION forming part of Letters Patent No. 761,233, da ed May 31 1904.

Application filed October 12, 1903. Serial No. 176,601. (No model.) I

To all whom, it may concern:

Be it known that 1, CHARLES H. KEEFE, a

'useful Improvements in Leather-Graining Machines, of which the following is a specification. i I

This invention relates to improvements 1n.

machines for graining leather such as, for instance, box-calf, bag-leather, enameled leather, shoe-upper leather, &c.and it 1s carried out as follows, reference being had to the accompanying drawings, whereinproved machine, partly shown in section; Fig.

2 is a top plan View of the same. Fig. 3is anv end view as seen from X in Fig. 1, and Fig. 4 is a cross-section on the line 4 4 shown in Fig. l.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings. 7

In the drawings, A A represent the end frames, which are secured at a proper distance apart by means of stays or braces B B B, as shown.

C C C and D D D are the rotary grainingdisks, which are splined upon the shafts C D and held at proper distances apart upon said shafts by means of the respective intermediate washers G D, as shown. The ends of the shaft C are journaled in vertically-adjustable bearings C C arranged in slotted guides A A in the frames A A, the upper ends of which are closed, as shown. In a similar manner the ends of the shaft D are journaled in vertically-adjustable bearings D D arranged in slotted guides A A in the frames A A, as shown,

A is a division in each frame A between the respective guides A and A, as shown.

Intermediate the bearings C G and the upper ends of the frames A A are arranged yielding springs E E, and intermediate the bearings D D and the lower ends of the slots A A are arranged similar yielding springs F F for the purpose of holding the grainingdisks C D in contact with the leather N during the graining operation. and allowing said disks to yield according to inequalities in the thickness of the leather that is being grained. For the purpose of preventing the disks .0 D from contactingI arrange between the yielding bearings C D and the division-bar A regulating-screws Gr H, as shown in Fig. 1, by the adjustment of which the graining-disks C D may be limited in movement toward each ,other, according to the thickness of the leather that is to be grained.

.At the rear end of the graining-disks is journaled in hearings in the frames A A the Figure 1 is a front elevation of the imshaft I, to which are secureda series of guidedisks K K, located in the spaces between the disks 0 D, as shown. The said disks K K are splined on the shaft I and held at proper distances apart upon said shaft by means of intermediate washers K K, as shown. To the ends of the shafts G, D, and I are secured the respective spur-gears C*, D*, and I, as shown in Figs. 1, 2, and 3. r.

L is an intermediate loosely-rotating gear intermeshing with the teeth of the gears C and I, and L is a similar loosely-rotating intermediate gear intermeshing with the teeth of the gears D and I, as shown.

To one end of the shaft I is secured a pulley I, to which rotary motion is applied by means of belt-power in the usual manner.

It will be noticed that by rotating the shaft I a rotary motion is applied to the disks C, D, and K, all in the same direction, as shown by arrows in Figs. 3 and 4.

In practiceI prefer to make the disks C, D, and K of metal and corrugated on their peripheries, as shown; but this is not essential, as said disks may be non-corrugated either of metal, rubber, wood, or fiber, as may be most practical or desirable, without departing from the essence of my invention.

In front of the disks 0 D is located a longitudinal graining-bar M, having its rear edge on located at or near the junction of the periphery of the graining-disks CD and that of I the guide-disks K K, as shown. In practice I prefer to attach to the front of said bar M or make integral therewith a work-supporting table M as shown, upon which the leather N is guided while being grained.

In using the machine the shaft I is set in a rotary motion, causing the disks C, D, and K to rotate all in the same direction, as shown composed of very few parts, and by its means skins or side leather may be quickly grained as compared with the usual hand method for this purpose.

In practice the disks K K are made of very thin sheet metal, so as to leave very slight spaces between the graining-disks which they intersect.

Having thus fully described the nature, construction, and operation of my invention, I

wish to secure by Letters Patent and claim 1. A leather-graining machine consisting of a pair of rotary shafts and graining-disks secured at intervals thereon in combination with a rotary shaft having guide-disks secured thereto intersecting the graining-disks and a bar arranged in front of and intermediate the rotary graining-disks substantially as and for the purpose set forth.

2. A leather-graining machine consisting of a pair of yielding rotary shafts and grainingdisks secured at intervals thereon in combination with rotary guide-disks intersecting the graining-disks and a bar arranged in front of and intermediate the graining-disks substantially as and for the purpose set forth.

3. A leather-graining machine consisting of a pair of series of rotary graining-disks arranged at intervals upon rotary shafts combined with a series of guide-disks intersecting said graining-disks, a bar arranged intermediate said graining-disks and means for adjusting the relative positions of the shafts for the rotary graining-disks substantially as and for the purpose set forth.

4. In a leather-graining machine the combination of a pair of rotary shafts, disks secured at intervals on the latter, a rotary shaft and disks secured thereto at intervals, intersecting the graining-disks and-a bar having its rear edge arranged at or near the junction of said graining and guide disks substantially as and for the purpose set forth.

In testimony whereof I have aflixed my signature in presence of two witnesses.

CHARLES H. KEEFE.

Witnesses:

ALBAN ANDRItN, SAMUEL J. WHITE. 

